| 时间域内的消光起伏光谱法 |
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| 引用本文： | 陈俊,沈建琪.时间域内的消光起伏光谱法[J].上海理工大学学报,2004,26(6):503-508. |
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| 作者姓名： | 陈俊 沈建琪 |
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| 作者单位： | 上海理工大学,理学院,上海,200093 |
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| 基金项目： | 国家自然科学基金资助项目(50376041) |
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| 摘 要： | 利用层模型得到消光起伏光谱及其数学表达式，光谱转折点的位置给出了颗粒的粒径信息，而光谱的深度则与颗粒系统的浓度有关．所得结果考虑了颗粒浓度对消光起伏光谱的影响．
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| 关 键 词： | 颗粒测量 透过率 消光起伏法 消光起伏光谱 |
| 文章编号： | 1007-6735(2004)06-0503-06 |
| 修稿时间： | 2004年5月8日 |
Transmission fluctuation spectrometry in time domain |
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| CHEN Jun,SHEN Jian-qi.Transmission fluctuation spectrometry in time domain[J].Journal of University of Shanghai For Science and Technology,2004,26(6):503-508. |
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| Authors: | CHEN Jun SHEN Jian-qi |
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| Abstract: | Transmission fluctuation spectrometry is a new method for measurements on large particles.Radiated by a narrow beam,the flowing particle system at a uniform velocity causes the transmission signal fluctuate violently.The transmission fluctuation signal is averaged within a variable time interval in the time domain and is then expressed in terms of the expectancy of transmission square.By changing the time constant,the transmission fluctuation spectrum is obtained,which includes the information of particle size distribution and particle concentration.In this work,the theoretical expression is deduced,which also takes account of the influence from the particle concentration. |
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| Keywords: | particle sizing transmission transmission fluctuation spectrometry transmission fluctuation spectrum |
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